Samuel e



(No Model.)

S. E. MOWER 85 G. J. SPENCER.

ELECTRIC MOTOR MECHANISM. No. 433,904. Patented Aug. 5, 1890.

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ELGTR$-MOTOR ECHANISM;

S?EIFHJATIGN forming part'of Letters Patent No. 433,904, dated August 1890. Application filed February 14, 1890. Sensible. 340,433; (Nomodeh) all whom it may concern-e:

Be it known that we, SAMUEL F. Iriownn' ven, conn'ty'of New Haven, State of Connecti-- out, have invented an Improvement in Eleotric-Moior Mechanism, of which the iolloutin description, in connection with the accompanying drawings, is aspeciiicetion, like letters on the drawings representing like parts.

V This in vcntion in electric-motor mechanism is an improx-e inentopen that shown tllh de cribed in another a replication, Serinl No. 329,760, filed November i), 1889, by Sztn'inel Mower, a. party to this invention, and has for its object to improve the motor mechanism therein shoe-n, will he described, whereby the motor may be run continuously and the ca-r-axle'on which the motor is secured may be started at any desired speed.

Ourin vcntion in electric-motor mechanism therefore cons its in the combination, with an axle, of n inotoz Wing its armature secured to it slce l mounted on said axle, a speed r l mechanism consisting of at fast on arm fast on the sleeve and s in mesh with said geersand mechanism adapted to hold the gear on the sleeve stationery to produce revolution of the car-axle, substantially as will be described.

or" our invention. will be pointed out in the claims at the end of this specification.

Figure l is {t longitudinal section of an electric-motor mechanism embodying our invention applied to a car-axle, the latter being shown in elevation Fig. 2, a. detail in elevation to more clearly illustrate the clutch mechanism; Fig. 3, a-section on the line-w as, Fig. 2, showing the clutch mechanism in operative position -and Fig. i a section on the 1 lllG JC;l ,Fig. 2, with the clntch-meeimnism in its operative position.

Referring to Fig. l, the oar-axle A, provided with wheels A, the eleotrie motor consisting; of field-magnets a, horn: seonrcd to them the hoods a", the yok of, d the lies: of, sccured to said hoods, the arms. to or forming-part of the sleeve a, loosely mounted on the said axle, he commutator a,

{'l-XlQ, av gear loose on said ture as", secured secured to said sleeve near 0110 end thereof, and the specdreducing mechanism consisting of the gear Z), keyed or otherwise firmly secured to the axle A, the g'carb, hnviugn different lllllll' her of teeth than the gearh, the yoke or arm U encircling the loose sleeve 66', and herein shown as made in two parts or halves secured together, as by bolts Z), and fastened to the sleeve, as by key U, the shafts Z) If, having bearings in the opposite ends of the yoke b and 1: rovidcd with pinions b b", in mesh, respectively, with the gears b b, are and may be substantially such asshown and described in the application referred to, withtlie exception that the gear Z) in the said application is rigidly secured. to the hood o Inhccord U '0", interposed between it and the arm 0 The rod 6 in practice will preferably have connected to it (i lever not herein shown, but

which is extended up through the car to be operated by the driver or operator.

Iii operation the rod 0 isturned and the cam c is brought into the position shown in Fig. 4 when it is desired the armature-sleeve a should rnnfree, the clutch-strap or ring 0 being at such time disengaged from the drum 0, as shown in. at, the genr'b' being at rest. With the el-ntel1-strap disengaged from the drum 0', as shown in Fig. 4, the armsture of the motor me,- he run continuously without producing motion of the cm axle, for the pinious b if, carried by the yoke 17 will drive the gear 1;", and the latter, being loose upon the sleeve of, will rotate freely without producing motion of the Z It now it is desired to start the car in motion, the operator will move the rod 0 so as to bring the cam 0 into the position shown in Fig. 3, thereby moving thefarm of the clutch-strep toward the arm a and bin ding the said strap tightly I upon the drum 0'. The drum 0 is in this manner held stationary, and consequen tl y the gear I) is stationary, so that in the movement of the pinions b 1) around the gears 71 l) the gear I) will be rotated and the car-axle revolved. It is evident that the operator may turn the rod 0 so as to cause the clutch-strap c to engage the drum 0' with more or less force and in this man nor produce a slower or quick motion of the car-axle.

\Ve have herein shown the eccentric-strap as operated by means of cams on the rod but We do not desire to limit ourselves in this respect, as other equivalent devices may be used-such, for instance, as a screw.

1. In an electric-motor mechanism, the combination, with an axle, of a motor having its armature secured to a sleeve loosely mounted on said axle, a speed-red ueing mechanism consisting of a gear fast on the axle, agearloose on said sleeve, a yoke or arm fast on the sleeve and carrying pinions in mesh with said gears,

hold the gear on the sleeve stationary to produce revolution of the ear-axle,-substantially as described.

E2. In an electric-motor mechanism, the combination, with an axle, of a motor having its armature mounted to run loosely on the said axle, a speed-reducing mechanism consisting of a gear 1), fast on the ear-axle a loose gear I), having a different number OI teeth than the gear I), an arm or yoke secured to the armature to revolve therewith, gears carried by said arm in mesh with the gears b b, a friction-drum secured to the gear b, a frictionstrap, and means to engage said strap with the f riction-d rum, substantially as described.

In testimony whereof We have signed our names to this specification in the presence of two subscribing witnesses.

SAMUEL E. MOWER. GEORGE J. SPENCER. Vitnesses:

SAML. LLOYD,. HENRY G. THOMPSON. 

